Energy Sources Part A Recovery Utilization and Environmental Effects,
Journal Year:
2023,
Volume and Issue:
45(4), P. 12243 - 12262
Published: Oct. 2, 2023
The
utilization
of
alternative
fuels
in
internal
combustion
engines
has
gained
significant
attention
due
to
concerns
about
energy
security
and
environmental
sustainability.
Waste
tire
pyrolysis
oil
(WTPO)
is
a
potential
fuel
that
can
be
produced
from
waste
vehicle
tires
through
process.
In
this
study,
the
possible
use
WTPO
diesel
engine
operating
under
Reactivity
Controlled
Compression
Ignition
(RCCI)
mode
was
investigated.
as
low-reactivity
RCCI
examined,
highlighting
importance
innovative
approaches
with
varying
reactivity
levels
for
effective
control
emission
reduction.
experimental
work,
tested
at
different
rates
15%,
30%,
45%
into
intake
port
using
PFI
system,
while
conventional
injected
directly
cylinder
by
CRDI
system.
tests
were
carried
out
load
conditions
maintaining
constant
speed
2400
rpm.
performance,
combustion,
characteristics
analyzed
compared
between
gasoline
LRF.
study
results
show
operation
sustainable
ringing
intensity
leads
increases
Brake
Thermal
Efficiency
(BTE)
usage,
BTE
increments
up
5%,
3.3%,
6.3%
observed
increasing
load.
Furthermore,
usage
effectively
reduced
hydrocarbon
(HC)
emissions,
addressing
issue,
known
benefits
reactivity-controlled
combustion.
These
findings
suggest
utilized
viable
acceptable
characteristics.
Energy & Fuels,
Journal Year:
2024,
Volume and Issue:
38(4), P. 2654 - 2689
Published: Feb. 2, 2024
The
rapid
depletion
of
fossil-derived
fuels
along
with
rising
environmental
pollution
have
motivated
academics
and
manufacturers
to
pursue
more
environmentally
friendly
sustainable
energy
options
in
today's
globe.
Biodiesel
has
developed
as
an
ecologically
favorable
alternative.
However,
the
mass
manufacturing
biodiesel
on
industrial
scale
confronts
substantial
cost
pricing
challenges.
To
address
this
issue,
high-efficiency
catalysts
a
large
number
active
sites
are
needed,
resulting
increased
output
quality.
Metal–organic
frameworks
(MOFs)
received
lot
interest
catalyst
for
converting
oils/fats
or
fatty
acids
into
biodiesel.
MOFs
polyporous
materials
that
can
alter
pore
size
well
topological
structure.
They
serve
versatile
foundation
designing
satisfy
unique
needs
catalytic
reactions
conversion
pathways.
purpose
current
work
is
shed
light
underlying
mechanisms
essential
properties
MOF-based
used
synthesis.
In
addition,
several
methods
connecting
inside
scrutinized,
while
usability
production
process
completely
compared
other
catalysts.
More
importantly,
limits
future
research
directions
about
utilization
synthesis
route
also
critically
presented.
general,
review
contributes
improved
awareness
potential
sector
by
investigating
primary
mechanism
characteristics
Proceedings of the Institution of Mechanical Engineers Part E Journal of Process Mechanical Engineering,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Feb. 8, 2024
In
the
transportation
and
power
production
industries,
use
of
renewable
environmentally
friendly
fuels
has
grown
in
importance.
Biodiesel
derived
from
coconut
oil
contains
over
90%
saturated
fatty
acids.
was
made
using
alkaline
transesterification
since
a
free
acid
content
less
than
2.5%.
Enzymatic
or
chemical
are
both
possible.
For
synthesis
biodiesel,
optimal
processing
conditions
60
°C
for
1
h,
6:1
ratio,
1%
potassium
hydroxide
95%
yield.
According
to
experiment,
55
ideal
reaction
temperature
produce
biodiesel.
Sixty
minutes
amount
time
extract
biodiesel
oil.
The
methanol-to-oil
molar
ratio
raised
yield
8:1,
increase.
Significant
amounts
an
catalyst,
which
allows
soap
develop
under
influence
acids,
responsible
high
response;
it
is
concluded
that
wt%
would
be
appropriate
catalyst
concentration
present
investigation.
central
composite
rotatable
design
(CCRD)
response
surface
methodology
method
used
optimize
several
process
parameters,
including
temperature,
duration,
concentration.
CCRD
optimization
approach
produced
better
results.
following
final,
optimized
results:
methyl
ester
ratio:
96.69%,
temperature:
°C;
duration:
59.2
min;
concentration:
0.7;
6.4.
Energy Sources Part A Recovery Utilization and Environmental Effects,
Journal Year:
2024,
Volume and Issue:
46(1), P. 1559 - 1587
Published: Jan. 11, 2024
Hydrogen
and
natural
gas
are
promising
alternatives
to
fossil
fuels
in
combustion
engines
for
sustainable
environment.
Consumption
of
is
a
matter
growing
concern
that
needs
be
dealt
with
seriously
sustainable,
better
tomorrow
as
have
dreadful
implications
on
the
Therefore,
there
an
urgent
need
across
globe
quest
environment-friendly
alternative
fuels,
which
can
power
internal
engines.
Moreover,
regulated
unregulated
emissions
from
been
affecting
human
health
In
this
review
article,
hydrogen
combination
along
diesel
pilot
fuel
investigated.
The
impactsof
exhaust
recirculation
also
discussed.
It
observed
H2
proportion
up
5–30%
beneficial
well
other
fuels.
further
increase
create
problem
backfiring,
knocking
increasing
NOx
emissions.
transportation
storage
biggest
problems
fuel.
Among
alternatives,
gaseous
great
importance,
they
proper
attention
inclusion
CI
engine
used
dual-fuel
mode.
